/*

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Copyright 1992, 1993, 1994 Sun Microsystems, Inc.  Printed in the United
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This product is protected by copyright and distributed under the following
license restricting its use.

The Interface Definition Language Compiler Front End (CFE) is made
available for your use provided that you include this license and copyright
notice on all media and documentation and the software program in which
this product is incorporated in whole or part. You may copy and extend
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distribution of Interface Definition Language CFE as permitted herein.

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and documentation for the Interface Definition Language CFE.

INTERFACE DEFINITION LANGUAGE CFE IS PROVIDED AS IS WITH NO WARRANTIES OF
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*/

// AST_Factory nodes denote OBV or component home factory
// construct declarations.
// AST_Factory is a subclass of AST_Decl (it is not a type!)
// and of UTL_Scope (the arguments are managed in a scope).

#include "ast_factory.h"
#include "ast_argument.h"
#include "ast_exception.h"
#include "ast_visitor.h"
#include "global_extern.h"
#include "utl_err.h"
#include "utl_identifier.h"
#include "utl_exceptlist.h"
#include "utl_namelist.h"

AST_Decl::NodeType const
AST_Factory::NT = AST_Decl::NT_factory;

AST_Factory::AST_Factory (UTL_ScopedName *n)
  : COMMON_Base (true,
                 false), //@@ Always local, never abstract
    AST_Decl (AST_Decl::NT_factory,
              n),
    UTL_Scope (AST_Decl::NT_factory),
    pd_exceptions (nullptr),
    pd_n_exceptions (0),
    argument_count_ (-1),
    has_native_ (0)
{
}

AST_Factory::~AST_Factory ()
{
}

// Public operations.

UTL_ExceptList *
AST_Factory::exceptions ()
{
  return this->pd_exceptions;
}

int
AST_Factory::n_exceptions ()
{
  return this->pd_n_exceptions;
}

// Return the member count.
int
AST_Factory::argument_count ()
{
  this->compute_argument_attr ();

  return this->argument_count_;
}

// Return if any argument or the return type is a <native> type.
int
AST_Factory::has_native ()
{
  this->compute_argument_attr ();

  return this->has_native_;
}

void
AST_Factory::destroy ()
{
  if (nullptr != this->pd_exceptions)
    {
      this->pd_exceptions->destroy ();
      this->pd_exceptions = nullptr;
    }

  this->AST_Decl::destroy ();
  this->UTL_Scope::destroy ();
}

UTL_ExceptList *
AST_Factory::be_add_exceptions (UTL_ExceptList *t)
{
  if (this->pd_exceptions != nullptr)
    {
      idl_global->err ()->error1 (UTL_Error::EIDL_ILLEGAL_RAISES,
                                  this);
    }
  else
    {
      this->pd_exceptions = t;
      this->pd_n_exceptions = (t == nullptr ? 0 : t->length ());
    }

  return this->pd_exceptions;
}

// Private operations.

// Compute total number of members.
int
AST_Factory::compute_argument_attr ()
{
  if (this->argument_count_ != -1)
    {
      return 0;
    }

  AST_Decl *d = nullptr;
  AST_Type *type = nullptr;
  AST_Argument *arg = nullptr;

  this->argument_count_ = 0;

  // If there are elements in this scope.
  if (this->nmembers () > 0)
    {
      for (UTL_ScopeActiveIterator i (this, IK_decls);
           !i.is_done ();
           i.next ())
        {
          // Get the next AST decl node.
          d = i.item ();

          if (d->node_type () == AST_Decl::NT_argument)
            {
              this->argument_count_++;

              arg = dynamic_cast<AST_Argument*> (d);

              type = dynamic_cast<AST_Type*> (arg->field_type ());

              if (type->node_type () == AST_Decl::NT_native)
                {
                  this->has_native_ = 1;
                }
            }
        }
    }

  return 0;
}

AST_Argument *
AST_Factory::fe_add_argument (AST_Argument *t)
{
  return dynamic_cast<AST_Argument*> (this->fe_add_ref_decl (t));
}

UTL_NameList *
AST_Factory::fe_add_exceptions (UTL_NameList *t)
{
  UTL_ScopedName *nl_n = nullptr;
  AST_Type *fe = nullptr;
  AST_Decl *d = nullptr;

  this->pd_exceptions = nullptr;

  for (UTL_NamelistActiveIterator nl_i (t);
       !nl_i.is_done ();
       nl_i.next ())
    {
      nl_n = nl_i.item ();

      d = this->defined_in ()->lookup_by_name (nl_n, true);

      if (d == nullptr)
        {
          idl_global->err ()->lookup_error (nl_n);
          return nullptr;
        }

      AST_Decl::NodeType nt = d->node_type ();

      if (nt != AST_Decl::NT_except
          && nt != AST_Decl::NT_param_holder)
        {
          idl_global->err ()->error1 (UTL_Error::EIDL_ILLEGAL_RAISES,
                                      this);
          return nullptr;
        }

      fe = dynamic_cast<AST_Type*> (d);

      UTL_ExceptList *el = nullptr;
      ACE_NEW_RETURN (el,
                      UTL_ExceptList (fe, nullptr),
                      nullptr);

      if (this->pd_exceptions == nullptr)
        {
          this->pd_exceptions = el;
        }
      else
        {
          this->pd_exceptions->nconc (el);
        }

      this->pd_n_exceptions++;
    }

  // This return value is never used, it's easier to
  // destroy it here and return 0 than to destroy it
  // each place it is passed in.
  t->destroy ();
  delete t;
  t = nullptr;

  return t;
}

// Dump this AST_Factory node to the ostream o.
void
AST_Factory::dump (ACE_OSTREAM_TYPE &o)
{
  AST_Decl *d = nullptr;

  this->dump_i (o, "factory ");
  this->local_name ()->dump (o);
  this->dump_i (o, "(");

  // Iterator must be explicitly advanced inside the loop.
  for (UTL_ScopeActiveIterator i (this, IK_decls);
       !i.is_done ();)
    {
      d = i.item ();
      d->dump (o);
      i.next ();

      if (!i.is_done())
        {
          this->dump_i (o, ", ");
        }
    }

  this->dump_i (o, ")");
}

int
AST_Factory::ast_accept (ast_visitor *visitor)
{
  return visitor->visit_factory (this);
}